I show each screenshot on a projector (or shared desktop) to the candidate and say:

What’s this screen from?

What does the screen mean?

If it was a server you inherited from someone else, would there be any actions you’d take?

What questions might you want to ask before you take those actions?

Would there be any drawbacks to your actions?

What would be the benefits of your actions?

I have started to use this in interviews and I’m already loving it. I don’t want people to memorize minutia (“Name all of the policies available in Policy-Based Management”) but if I show a picture of the different policies, that should jog your memory on when you’ve used PBM to solve interesting problems.